C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

coolant leak

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Old Jul 23, 2007 | 02:22 AM
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Default coolant leak

I've never changed the radiator in a late model C4. Early models were easy, I could do it in my sleep. Now my 95 has a slow drip from the radiator shroud, no hoses or plumbing appear to be leaking so it's radiator time again. About how much time should I give myself to change this one. Thanks in advance.

Randy
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Old Jul 23, 2007 | 09:06 AM
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Just take particular care around the A/C lines. The lines and fittings are aluminum and easy to bend/break.

Once you get all the 10 mm bolts out alongside the shroud, it's not that hard of a job. Replace your hoses and thermostat, too, while you're at it.
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Old Jul 23, 2007 | 01:45 PM
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Originally Posted by arandy
no hoses or plumbing appear to be leaking so it's radiator time again.
AGAIN? Once you get it out, or at least have the top of the shroud off, you should be able to find the leak. It may only be a seal between a tank and the core. Even if it is a cracked plastic tank, they are replaceable for a lot less than a whole radiator.

RACE ON!!!
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Old Jul 23, 2007 | 03:41 PM
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No, the new radiators are not that expensive. As cheap as they've gotten, I seldom bother with repairs anymore (repair - $80, new $135). The plastic end you don't replace will crack soon, and negate any savings. JMO
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Old Jul 23, 2007 | 03:49 PM
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Where did you find new for $135?
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Old Jul 23, 2007 | 04:13 PM
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I was using Royal Radiator in Phoenix. Had to buy one in Omaha for my Blazer this spring and they wanted $95 to replace one side or $130 for a new one. They were upset that I opted for new (their profit on the repair $70, their profit on new $25 appox). Check around, and you will find the prices will vary alot, you should find one for under $150. (AutoZone /Phx - $154)
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Old Jul 23, 2007 | 05:09 PM
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Thanks zr. Here in the land of overpriced real estate and gasoline autozone wants $234.
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Old Jul 23, 2007 | 06:16 PM
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Oops, I had checked on an 89, noticed you have a 95. Autozone /Phx $210 (I've seen their prices vary $20 or so between their stores in the Phx area ) On radiators I've always had better luck at the smaller shops (they all seem to get them from the same place anyway).
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Old Jul 24, 2007 | 12:38 PM
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Simple and straightforward job. Once you get the shroud off, it is quick and painless. Before you even start, spray some wd-40 on the transmission line bolts (if an automatic). by the time you remove the shroud and hoses, the transmission bolts shoul loosen easily. Before you put the new one in, now is the time to clean the a/c fins. Simple green does a great job of removing road grime. Start to finish, 1 1/2 hours.
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Old Jul 24, 2007 | 12:52 PM
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Originally Posted by arandy
Where did you find new for $135?
Check out the partsladi on Ebay, I think their price is 128.00 plus shipping.

Here is a link

http://cgi.ebay.com/ebaymotors/ws/eB...6307109&rd=1,1
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Old Jul 24, 2007 | 01:12 PM
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Thanks for the info guys. And Randy thanks for the link.
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Old Jul 24, 2007 | 01:20 PM
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The rebuild/repair charge for my radiator was almost $100 with no guarantee and a new AC Delco radiator was $134. The Parts Ladi: 334-493-1240

To replace your radiator will take a couple of hours the first time, but then less than 20 min once you have done one.
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